Following hyperlinks from topic to topic on Wikipedia as you continually come across concepts you want to explore in more detail. It usually results in simulatenously exploring multiple deep threads of related topics, but ending up in various places far from where you began.

I starting reading about Money Creation on wikipedia, and after wikihopping for an hour ended up reading about famous modern cases of Japanese ritual suicide. True Story.

The act of traversal over many Wikipedia pages, typically to pages that are contained in the initial page you went to read.

Today i was wikihopping so much that i started reading a page on Samuel Clemens and ended up on a reading a page on the war atrocities by Japan during the Second Sino-Japanese war. (Via Mark Twain->Vivisection->Human Experimentation-> Second Sino-Japanese War)